Vehicle brake mechanism



This invention relates, geneiniiy., te iin proveniente in lnfnhe mechanism, foi: vel'iieles, sind especially foi' entemobiiee having pivotfzlly nimineil nent wneeie; and the inveib lien hun i'elei'emrm n'ieie pzii'licnleily, te 2i, nevel solely7 mechanical arrangement 'for ap plying power le the nmlie devices of vehicle wheels, in connection with either two ci' 'oul wheel ln-nhe syfslenis, while :it ille Seine 'lime eqnnlixingf the lnfnnniniissien of the applied power le all ihe emilie devices served ihli'eliy. l

The inveni inn hun 'for ite nl iieinzil object "Le ln-ovule n simple, and 4el'i'eeizive power 'Linngniinsien nienns: im' vehicle bmles, n'heh n; (especially mlnpteil te eflieienlly nennie l aken eennec'leil wiah 'lilie piveelly ninnnleil freni 'wlweleI nl n vehicle, nelwith mainline lhe Steering oscillations 0E said wheel@ nml wil/heul: interfering with ille lee (loin el' Fneh eneiilznzim'ni; the invention hun 'l'ni- :i 'l'ni'lheir nhjeeu in provide, eepeeiiliy when nseil in :eiineeliien with fein: wheel ln'nlie lvqleimnnienns whereby the 'power i'rnnsniilieil in eqnnlly ilisl'i'ibneil el." equal- 'wml relative le all leni wheelsl el the Vvehicle; nnil the inveninn hns reference te n nevel wnsli'nelinn el liexble power nnn inineien ineens, whereby lw applied power if.; lelivei'eil by llnnFl'y through ilexilileguides7 ns lis linnjnislie l irnn n x'nleins; wheleliy 'the pnnef is li'nnnniil'ieil `liyV pnl-l.

(illnlnhievi's el' 'hin inveniion, nel; :it this linie nim-e 'lnntienlfn'ly ennineisileil, 'will lie fic-:arly ninleiw iefnli'i'nln ille following cle niilerl dessi'iptien of' the sanne.

'l`lie invenlien is eiezn'ly illnsllnted in the neemninnying lliziwings, in windu-- Fig'lne i in :i plain View eT a, chassis of an :inteineliile equipped willi lxhe novel brake inei'lninim nnnle unwilling; te nml elnlimlyin.;r the ni'iiieinlen el' rhin iiweniion; Figgne 2 is nn enlnig'ml plain view of' 'lille means *fel* ernnilyiinff the liwinsniisnien of powei te the wheel limlf I inline if; :i verliefd lenghlinlinnl sentien. i'tnhen en line lin Figure 2; lfig. l n i'ngginenlniy imineetive 'View' n' ene ni'innejeniem ei feet levei i201 nehmt ing lhe nevel pewe linnmnitting und equalu lying ineclnminni; Figure .5 is n iziginenimiy cross een-lien laken (in line 5-5 in lgne 3: Figure (5 is. nn enlarged .fragmentary lenu gnwlinnl seczien of the flexible h'rnsttrzmsmission Serving the brake devises per se; and

n" i" l* 1 LT 1 ligure l is an enlmged elemnen 01 lane bien@ devices 'eenneeizeal n'zh the Vehiele iff-iinilij' ehernefern in? Telex-ence ere einpleyel in 'Kili e2? 'ne herein above eseiiberl views, te indienle Corresponding pzns.

ilelezi'ing new Le Seid cl1e.\'ings,tlie iefelence che 'neier l .indicates the chassis ef en entoinebile including the usuel front und rein mile structures.. The iree Wheels 2 aire nnnn'iflenl in the usual nie-miei so es to lie driven .in the ordinair" wey, and i'ne from wheels 3 are meuiited to eseiilaiie in lieifizon# tal piene en the st veifinp; knuckle conneeiiions under the eentifel mi" the usual slewing meehanisin Partially shown ai; 5. Eeeli ef the ifezu and freni', wheels 2 and 3 we @rm vhleil with service lnane devices, each eempi'isingj n, brake drinn 8 Wheli is encircled by' n discontinuous lnehe mind 'Z subject, when intimated, le eenlruevon apen mid l is pieviclefl ndyiaeen Je the innei side of the drinn. (ln iil'ie lnelie devices eonneeeoi with the rear Wheels the stetionaicy plates 8 :ne mounted in centi'ieetien with the rear housing, While in lne brake devices connect ed wih lhe firent wlieeis ille said plates we meenten in eonneetien wien elle mevnbie element el he Seei'ing linnelale ennneetions 4c.) inp'pered by ihe stnienmyplsie El is a bieeliei; member i) lim/nig n pefornte lug l0. fenneeted with ene end of seid brake band nimnnl sind infinie drum. sntenury plate T isi :i knuckle l1 ze which is pivemlly eenneelel the lewe? end. nii enf actuating lever' Uenneeleal wih 'the eppesilie end of Seid brake bami 7 is en eer iivet-nlly connected with said actuating; ieveif l2 inerf mediate its ende is a link lwlieh exteniln nihlebly ln'ongh said lng l() of the bmeke ineineei: and the free end Mwlniel'i is sui'- nbly Cenpled with Seial ein" 13. Afifanged z'ii'ennd, seid liinlv M between lllie biifnke banal, lil-l und the infeehel; nienibe lng; il() is eenipien ien snifng l5? which i'ieifmnlly tenn ehe bend i e. j ended. Said e leil te receive enhisable stop U gealle with the opposite side of finie ,miner ling 11.0 le deermne 'the nei'inul er' lannion @f thellalfze bami 7. 'fenneete with j@he upper 'iee end of seid bi'nelqe, nie-mbe? il is :i which is disposed. im lengitulnal ?:eciprm cation e plunger member 3 8, the enter iee end of which i@ pivomlljy een neeted Wile lie upper and mi? ectnezing lenen" 1%,

lll@y The power transmission and equalizing means serving the above described brake devices comprises the following mechanism. Supported in connection with the chassis in a convenient location is a lease plate 19 or other suitable traine work. Connected with stiid base plate or traine work 19, adjacent to the forward end thereof, is a stationary guide block 20 in which is slidably mounted, for longitudinal 'reciprocation therein., a. push-bar 21. Pivotally connected with the outer end of said reciproeahle push-har 2l is a transverse equalizer bar 22. Pivotaily connected to the respectivefree ends of said equalizer bar 22 are thrust plungers Said thrust plungers 23 are longitudinally reciprocable in guide sleeves 24 which are rigidly secured to and supported by stationary housing blocks Q5 connected with the forward end of said base plate or trainework 19. SuitablyT anchored pull springs 2G are connected with the respective tree ends of said equalizer' bar 22 to normally retract the latter and its push bar 2l together with said thrust plungers Q3 to initial positions. Coupled in communication with the outer end of each guide sleeve :24, by means of any forni of coupling union 2T found convenient, is one end of a flexible tubular guideQS. Said flexible tubular guides respectively .ess tend forwardly into operative. connection with the respective brake devices ot' the front wheels 55, and' to this end are respectively coupled in coniinunication with the, guide blocks 1T of said respective brake devices so as to be opposed to the plunger members 18 o't` the hitter. Said flexible tnbular Lguides 28 may be attached by clips 2t) to the chassis frame l at points adjacent to the front wheels 3, so as to leave a freely movable or flexingy portion f extendingl from such point ot' attachment to the t'i'ont wheel brake devices, so that the steeringr movements or oscillations ot' the said front wheels 3 will not be impeded, hut rather the tlcxiii;r of said portions f ot the ,Quid-es 2S will readily yield to such movements. while not in any way interferingY with the transmisV sion of brake apiilyinir power tlierethreugh, as will. liennderstood troni the tuither description here following'. l'loused in said flexible tubular laides 28. so as to extend between the thrust plunpei's 22% and the plunger members 18 ot' the l'ront wheel brake devices, are trains oi' power transmission thrust elen'ients, preferablyr in the i'orin ot' steel halls 30, although shapes ol' such thrust elements other than the spherical or ball shape shown in the drawings niav hc ein )loyed if desired.

u similar power transmission and equalizing,r means may he provided for actuating the brake devices oli' the rear wheels 2, the saine consisting ot' a stationary guide lilock 3l, mounted on the rear end ot said hase m ieee/,see

.work 19. tuitahly anchored pull sprinos Ill' KD' are connected with the respective tree ends ot said equalizer har 33 to norinallv retract the latter and its push har 32 together with said thrust plungers 3ft to initial positions lCoupled in communication with the outer end ol cach guide sleeve 35, by means of a suitable coupling union 38, is one end olE a flexible tubular zcuide 39. Said guides 39 respectively extend rearwardly into opera tive connection with the respective hi'alie devices ot' the rear wheels 2, and to this end are. respectively coupled in communication with the oruide blocks 1i' ol said respective rear wheel brake devices so as to he opposed to the plunger members thereof. Said guides 30 may be. supported atpoints intermediate their ends by clips 4() connected with the chassis l. Honsed in said guides llt), so as to extend between the thrust plungfei's 34 and the plu nger members ol the rear wheel brake. devices, are trains ol power transmission elements preferably in the torni ot steel halls.

'lhe means for simultaneously apiilyini; power to` the push hars Qi and 32, while at the saine time equalizing the. power so applied, consists in a toggle-joint lever coinpi'isingV a pair ot' .links fil and l2 pivotally connected at their inner ends and having their respective outer ends pivotally connected with the. inner ends of said respective push bars 21 and 32. Preferably the pivotalv connections between the outer ends ol the tonele linhs 41 and ft2 and the push hai-s 21 and includes anti-'friction rollers l-Il which are guided in a tiackwajiv t4 with which the base plate or traine work 19 is provided. Power is applied at the toggle joint ol the links -ll and 12, preferably by a downward thrust thereon which causes the4 toggle-joint lever to entend and 'thus produce equalizcd outwardly thrusting movements ot thi respective push bars 21 and 32. A suitable means tor thus actuating the tog'gic'joint lever consists in a loot lever 45. i'ulcruined at etti on the top of said rear guide. block 3l, or at any other convenient` location, so as to extend forwardly and upwardly over the togglejoint lever. The pivot:el connection of the inner end of the toggle tinlrs 4l and may include a flanged anti-triction roller e? on which. said All.)

toot lever lrheers. The free end of said foot lever elfi is u lturned to progect 'through the floor oi' the vehicle hotly mounted on the 4chassis 1, and terminates in e pedal 48 to which the operator muy apply the loot in depressing the `loot lever and thus aetunting the brake mechanism lt will be understood. that other forms of connection between the foot lever 45 and toggle-joint lever may he employed, or other forms of power applying' means to serve said toggle@ointY lever may loe employed within the scope of this invention. Y

t-is desi able to so construct the thrust plungers 23 and 24 that the seme may be extensible or adjustable longitudinally to take up wear in the transmission elements 30, end to individually relate the transmis Ysionnfieehanism as whole in proper ed'ust ment to the brake' devices olf each wheel. To this end each thrust plunger proper is threaded to receive on its 'tree end anettensible member 49 which may he long'itudinully moved on the plunger proper '-to lengthen or shorten its total length as may loe desirable. The threaded plunger proper is also provided with a loch mit 5() lor jamming or locking the extensible member in desired adjusted 'position thereon, all oli which is most clearly shown in l 1 igure G ot the drawings.

ln operation, when the foot lever is depressed the togglejoint lever is depressed and extended forwardly and rearwardly to outwardly move the thrust bars 2l and 32. The outward movement ol' the thrust bars 21 and 32 move outvwirdly the respective transverse equalizer bars 2 and 33, and

thus thrust upon the thrust plungers 3 and 3d. The forward movenwnt thus imparted to the thrust pluugers 23 and 3d is transmitted through the transmission (-zlcuicuts 30, which'are caused to move forwardly through their respective guides 28 and 3S), whereby theplunger memher 1,8 ol `each individual brake device is moved to turn the actuating lever l2, thus drawing' `the link .14 whereby the ends` o'l the braho band Y are movcd toward each other to thus contract thc latter on the ln'ake drum li. This operation is easily elleeted notwilhstanding the flexible sections ol the guides 5258, sim'e 'although such sections will flex or yield 'to steering moven'leuts ol the l'ronl wheels'they nevertheless permit 'treo longitudinal movement of the train olE transmission eleineuts therethrough 1 so that the thrust oi the latter is none-the-less transmitted to' the. plunger members 18 ,ot the trout wheel brake devices. It will also he evident that the transmission of the applied power to the brake devices of both the front and rear wheels is mutuall equalizod throughout, that is the epplie pressure equally ap plied toell tour braltes according to their individual requirements, sind in this respect my novel system is decidedly lexihleand reliable although the operations are entirely mechanical; in lect my solely meolenieol system possesses all the advantuges, as to romplcto equalination of the transmitted power to the several brake devices, which is possessed by e hydraulic brake system, lont avoids the losses and annoyences incident to the use ot iluids. ln my system, es aliove described, the toggle-joint lever assures equal application ol power simultaneously' to both the front and rear wheel hreles, end consequently front and rear wheel brakes on the same side and on each side off the yehicle are applied equally; the transverse rqualizer hers 22 and 3B respectively equaline theapplication of power as between the brake devices ol 'front wheel und front wheel and as betweenthe breite devices of` reur wheel and roar wheel. lh'om this it will be clearly evident that u complete end full equalization es between all Jfour broke devices ol the vehicle wheels is assured.

lllhile l. ha described the principles ol my invention as :ipplied to a. four wheel brake system, l also deem the same to in clude within the scope thereof the novel mechanical feature; as applied in a two wheel brake system, aud hspecially the novel mechanifal.features as applied lo operate brake devices on pivotully mounted 'trent vehirlc wheels :rione or when used in eonnerlion with other forms of power applyingi mechanism to'scrve the hrahe devices of rear vehicle wheels.

l am aware that some rhanlfres may he made in the general arrangements and com binal'ionsof theseveral devices und parte` of my novel vehicle hrako system without departing' from the scope ol' the present involition as set *forth in the toi'egoiiunA specification, and delinzd in the appended claims. llcnre. l do not limit ,my present invention lo the 'exact arangements and combinations ol the parts as described in the foregoing specification, nor do l limit myselll lo the exact details il the ronstruc tion of said parts. as illustrated in the acrompanying` dr: wings.

l. lu a vehicle having pivotelly n'iounled iront .vheelsn lnake devices 'for each, 'trout 'wheel provided with plunerr neeinltert, i r actuation; the sume, reciprocable thru@`L plungers correspondingr to each broke de vire, tubular guides respectively extending between each thrust plunger and the plunger members olf' said respective brake devices with the opposite ends ol which said thrust plungers and brake device plunger men'ihers are reciprorably related, 'trains of transmission elements freely movable longitudinally in said tuhulufr guides between said thrust plungers and he device plunger members,

Gil

lill@ lll) il lill l Sill* till said lLuhular 2guides having; 'freely ilexiihle portions adjacent their connection with said brake devices, and ineans ior aetuatiug said hrusy pluntreis. i

2. Vin a vehicle having pivotallvv inounled 'fi-out wheels, nraiie revises for each liront wheel provided with plunger members for having 'treeliflexible portions adjacent their eonneclion with said brake devices, a trans-- verse equalizer oar havingl its opposite ends pivotally connected respextively with the rear ends of said thrust plungers a reciprocaide push liar having: its forward end pivotallv eonneeed with the interniei'iiate portion of Said equalizer har, a ogglojoint; lever ineans for actuating s 7d 'push har, and a 'foot lever -tor actuatii'ig' said toggle-joint lever means.

3. ln aV vehicle having a chassis provided with frontl and rear axle structures, rear wheels driven through said rear axle structure, iront wheels pivot-ally supported from said vfront axle structure to swing' on a vertical axis, brake devices for each rear and iront wheel provided with plunger niemhers for acluaingr the salue, a frame work supported by said vehicle chassis7 reciprocahle. thrust. planners corresponding o each brake device, means on said 'fran'io work o mountl aci thrust plunger, tubular guides respectively extending hei'iweeu each ihrust plunf e and the plunger nienihers of said respe liralic devices with the opposite ends or which said 'hrust plungers and hralie device plunger nieuihers are reriproealdy related, trains of iransn'iission elements freely movable lonrjiiiulinally 4in said tubular guides between each thrust i'ilunpfer and a corresponding' brake deif'ice plunger ineinher, said tubular guides servingV the brake devices of front wheels having; freely tiexihle portions adjacent Jdieir connection with said brake devices, ineans for actuating)r said thrust piling-ers, and spring means 'for retracting said thrust plungijers.

4. In a vehicle having` a eliassis provided with iront and rear axle strui'ctures, rear wheels driven through said rear strueture`r front wheels pivolall yvv supported from said front. axle structure o swing on a vertical axis, brake devices for each rear and front Wheel provided with plunger members for actuating; ihe same, a frame work supvported hv said vehicle chassis, reciproeahle tin-usi plungers eorresponi'liug to each laalie de\ lee, n'ieans on said 'l'raine work to niount each thrust plunger, tubular guides respeclivel)v extending between each lhi'u `plunger and the plunger ineinhers or said respective hrali'e derives with the opposiie ends of whieh said thrust plungers and hrale doviee plunger members are reeiprorably rclai'ed, trains oi transmission elements freely uiorahlc longitudinally in said tubular gudes hetween each thrust plunger and a eorrespoiuling halio device plunger ineinher. said lubular guides serving' the brake deviees oi said iront wheels having 'lreely flexible portioncj-z adjacent their eonueeibion wiih said brake devices, u. transverse equalizer har having; its opposite ends p allyY eoui'iected with-Allie rear ends ol" said thrust plungers serving; said front wheel ln'alre devices. a fmwardlv directed leeiproeahle push har pivotallv connected with the interinediate portion ol said equalizer har? nieans ou said -hanne work lo mount said push lar, a second transverse equalizer bar having its opposie ends pivotall)Y connected with the rear ends oiv said thrust plungers servingA said rear wheel lli-alie devices, a rearwardly direi-ted reeiproeahle push ba pivotally conneeted with the intermediate portion of said second equalizer har7 spring' means 'For retraetingr said lhrust piangere 7with their equalizer hars and push bars, a oggle-joiu lever means conueeed with and between said loiwari'l and rear 'push harsv and a foot lever im' act uating said tiogglejoint means ln a hralie system 'for vehicles each wheel of vwhich provided with a brake rneehanisiu, a sellE equalizing power trans mission nieans ornnprising oppositely ret-1proeahle push hars each push har hay a transverse equalizer har pivotally connected with its free end, liralie actuating rransniission nouns connected intermediate he, speetive free ends of said equalizer hars and zhe respective iii-alie nieeluinisins :i tuff lejoint lever nieaus connected with and bo tween said push hars and means for tualingl said toggle-joint; lever means.

(l. ln a liralcesvszeni 'lor reaiclcs each wheel ol which is prin'ided with brake lnechanisn'i, a self eepialing` power 4ransinission nieans eoiuprising oppositely reciproeahle push hars. each push har having a transverse equaliser harpiroally connected with iis free end, hrake aeiaiating iansrnission ineans connected intermediate the respective 'free ends olf said equalizer bars and he resi'iectire hrale nuafhanisin` a toggle join lever means connected with and l3etween said push bars, anda pivocd 'ooilever cooperating; with said loggie-joint lever means.

v7. ln a vehicle brake system, tie coinhimarion with a lzrsahr, nischen rein-cle Whos i? ti having e piunggei device for actuating the saine of e, reciprocehie thrust plunger, i: tu-

huhu guide amending between said thelist @plunger and he'brake actuating phingei" w device, train of t'ensiniesion elements movable inngljindinaliy in Said tubuiz'u `guide inicien the tlnuss of seid thi'iis't phmger i0 imneniii; onemiive 'nioveinene i@ said brake ecuaing nhlnggei' iiveviceiand ineens foi achunting Said ihus pinngex.

ii. iin e Vehicle brake sysenn i-he combi nation Wiih :1 from: vehicle wheel which is pi'mniiy Supported to swing' on :L vertical 0*? e brake meehfznisi'n n10 fehle with Seid wheel. said brake i'necflmnism having a plunger device foi' nctuniiug' the sume, n i'ecipincnhie thrust piunpgcr. .fi iexihie tubular gniule exiienciing; between said thrust plunger and said ineke ectuaingr plunger device., :ztisiin of transmission eieinente movable imflgituiinuiiy in Said iiexihie tubular guide under the 'hiust 0f .said thi-ust plunger i0 iiensxniil opei'ative movement to seid brake ziemaiziim' 'plunger device, and means 'for ec 1 fuinus; plunger. Si. Yin e, Vehicie hi'aijce sysen'\he c0mhinezien 'with finnt vehicle wheeis which are pivehiiiy snpporied *no swinea on veribicei :mes in? breite mechanisms for each Wheel iihnnfi movable therewith, each hrake mechethe seine. i'eciiin'ccebie thrust plunger i0 serve eaeh hiahe mechanism, e, 'fiexibie 'Euhniai guide extending between each thrust ninngen aniif the brake mechanism served ihe/ehy, e/itrain of transmission elements ninvehle iongindinniiy in each fiezihie inhii im' guide nnciel' 4he hi'ne; 0i: n if plunger to 'transmit spermine mei/einen?, ne The corresponding hrnke @tunning @hingen device, a transverse equeiizei han: in ibhe ef which said hiust .pinngers are iively pivoteiy connected7 ineens: hn ecnniingg' 'eiti eqiuihxeif han pmenee equniiz-ed operative thrusting nieveinenie 'if' seid hi'ust pinngers. y

'10. in e vehicle hrake system, she eeinhi nation with ii'en vehicie Wheels pivoneiiy eumuored to swing; en l axes of hl'ehe mechanisms for each Wheel und movable therewith, @zieh brake mecha nism having a phi-nger device tier ecnetinp; the same a iecipiecnhie tinnen ninnggen te Sefve each brake mechanism., e iexihie inn u huhu? Lnieie extenfiinn' heiveen each tinnen mi' plunger :1mi the ineke mechanism ,seni/eci iherehy, e tinin oi? mnsmissien eieinenie moveable iongzihuiinuiiy in erich ienihie @niniie'c 2q fuicie under the 'hiust of a iihins; ninngff *U lansniit operative movement is@ ehe corresponding hi'ake animating phxngen die vice, e. transverse equeiizer ha? to ehe enen@ of which said thrust plungers are mep-ec tively pivdtniiy connected., e 'ieeinmeehie push-hai for actuating sai eqneiizei? han". ami iever'mechanism fon eeueing seiii push-har.

in tesiniony that einiin the inven'ien set ferh eigene have heifeuno sei my heini?? this 3rd dey of September, i925. 

